/*
 * Copyright 2023 The Bazel Authors. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.google.idea.blaze.cpp.oclang;

import com.google.idea.blaze.cpp.SourceFileFinder;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.vfs.VirtualFile;
import com.jetbrains.cidr.lang.preprocessor.OCImportGraph;
import java.util.Collection;
import javax.annotation.Nullable;

public class OCSourceFileFinder implements SourceFileFinder {
  @Nullable
  public VirtualFile getSourceFileForHeaderFile(Project project, VirtualFile headerFile) {
    Collection<VirtualFile> roots =
        OCImportGraph.getInstance(project).getAllHeaderRoots(headerFile);

    final String headerNameWithoutExtension = headerFile.getNameWithoutExtension();
    for (VirtualFile root : roots) {
      if (root.getNameWithoutExtension().equals(headerNameWithoutExtension)) {
        return root;
      }
    }
    return null;
  }
}
